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◉ Introduction to Nickel Release
Nickel is an element that can easily cause contact allergies. Nickel will be absorbed by the skin through the release of some nickel-containing materials and after long-term contact with the skin, thereby causing allergies to some individuals; further exposure to soluble nickel salts will lead to national contact dermatitis (according to statistics, 20% of people are allergic to dermatitis). Nickel has obvious allergic reaction symptoms). At present, in daily necessities such as clothing and jewelry exported to Europe, if there are metal accessories containing nickel in the material composition, it is generally required to test the standard release amount of nickel.
The European Union passed the 94/27/EC Directive (Nickel Release Directive) in 1994, which is used to control the use of nickel (Ni) (Ni) in products that have direct and long-term contact with the skin, such as necklaces, bracelets , watch cases, watch straps, metal eyeglass frames, metal shells and metal buttons of consumer electronic products (MP3, digital cameras, etc.), etc., on the grounds that nickel (Ni) may cause allergic reactions to the skin.
According to the directive, the nickel (Ni) release rate per square centimeter must be less than 0.5 micrograms per week.
EU member states have banned the manufacture and import of products that do not comply with the directive since July 20, 2000.
On July 20, 1997, the European Union issued three harmonized standards according to the requirements of 94/27/EC, namely EN1810, EN1811 and EN12472, which clarified the quantitative analysis method of nickel (Ni) standard release.
◉ Limit Requirements for Nickel Release:
The European standard specifies that the release of nickel in clothing, jewelry and other products shall not be higher than 0.2ug/cm2/week. On July 20, 1997, the European Union issued two new harmonized standards according to the requirements of 94/27/EC, namely EN1811 and EN12472, which clarified the quantitative analysis method of nickel standard release.
◉ Nickel Release Detection Principle
Subjects tested for nickel (Ni) release were placed in an artificial sweat test solution for one week. The concentration of dissolved nickel (Ni) in the solution is tested using atomic absorption spectroscopy, inductively coupled plasma spectroscopy or other suitable analytical methods.
◉ Nickel Release Test Method
Total nickel (Ni) content test (EN1810:2005);
Nickel (Ni) release test for products with direct and long-term contact with the skin (EN1811:1999, applicable to products without electroplating coating);
Test of nickel (Ni) release from coated articles after catalysis and wear (EN12472:2005, applicable to coated products)
◉ Nickel Release Test Project
|
Reference Method or Standard |
Applicable Material |
Testing Limit |
|
EN 1811 |
Nickel-containing products (contact with skin） |
0.1ug/cm2/week |
|
EN 12472，EN 1811 |
|
0.1ug/cm2/week |
|
EN 12471 |
Metal |
0.5ug/cm2/week |
|
EN 16128 |
Metal parts of eyeglass frames and sunglasses that contact the skin |
0.01ug/cm2/week |
|
EN 12472，EN 16128 |
|
0.01ug/cm2/week |
|
EN 12586，EN14372 |
Metal parts for baby products |
0.01ug/cm2/week |
◉ Compliance Services
As a professional third-party testing and certification service organization, Jiayu Testing has qualifications such as CMA, CNAS, CBTL, CPSC, and has obtained laboratory accreditation from multiple authoritative certification agencies at home and abroad. The laboratory is strictly built and managed according to standards, equipped with advanced instruments and equipment, and has a skilled professional technical team with rich industry service experience and strong testing technology capabilities. It is proficient in various regulatory standards and provides nickel release testing services to assist enterprises in actively responding to regulatory requirements and effectively improving product compliance. Welcome to contact us at 400-9269-886!
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